Update modules for go 1.11.4+

Go 1.11.3 changed how checksums are created in some cases, which caused
failures building via modules. (ref golang/go#29278)

Update the checksums for the failing modules.

To catch this is the future, a modules build was added to the build matrix. I
also noted that we were pinning the `.0` patchlevel of each go version which
wouldn't have picked this up, updated it to build with the latest patch
release.

.travis.yml

@@ -2,19 +2,22 @@ language: go
 
 sudo: required
 
-go:
-  - '1.10'
-  - '1.11'
+matrix:
+  include:
+    - go: '1.10.x'
+    - go: '1.11.x'
+    - go: '1.11.x'
+      env: GO111MODULE=on
+
+env:
+  global: DEX_POSTGRES_DATABASE=postgres DEX_POSTGRES_USER=postgres DEX_POSTGRES_HOST="localhost" DEX_ETCD_ENDPOINTS=http://localhost:2379 DEX_LDAP_TESTS=1 DEBIAN_FRONTEND=noninteractive DEX_KEYSTONE_URL=http://localhost:5000 DEX_KEYSTONE_ADMIN_URL=http://localhost:35357 DEX_KEYSTONE_ADMIN_USER=demo DEX_KEYSTONE_ADMIN_PASS=DEMO_PASS
 
 go_import_path: github.com/dexidp/dex
 
 services:
   - postgresql
   - docker
 
-env:
-  - DEX_POSTGRES_DATABASE=postgres DEX_POSTGRES_USER=postgres DEX_POSTGRES_HOST="localhost" DEX_ETCD_ENDPOINTS=http://localhost:2379 DEX_LDAP_TESTS=1 DEBIAN_FRONTEND=noninteractive DEX_KEYSTONE_URL=http://localhost:5000 DEX_KEYSTONE_ADMIN_URL=http://localhost:35357 DEX_KEYSTONE_ADMIN_USER=demo DEX_KEYSTONE_ADMIN_PASS=DEMO_PASS
-
 install:
   - sudo -E apt-get install -y --force-yes slapd time ldap-utils
   - sudo /etc/init.d/slapd stop

go.sum

@@ -6,7 +6,7 @@ github.com/boltdb/bolt v1.3.1 h1:JQmyP4ZBrce+ZQu0dY660FMfatumYDLun9hBCUVIkF4=
 github.com/boltdb/bolt v1.3.1/go.mod h1:clJnj/oiGkjum5o1McbSZDSLxVThjynRyGBgiAx27Ps=
 github.com/cockroachdb/cmux v0.0.0-20170110192607-30d10be49292 h1:dzj1/xcivGjNPwwifh/dWTczkwcuqsXXFHY1X/TZMtw=
 github.com/cockroachdb/cmux v0.0.0-20170110192607-30d10be49292/go.mod h1:qRiX68mZX1lGBkTWyp3CLcenw9I94W2dLeRvMzcn9N4=
-github.com/coreos/etcd v3.2.9+incompatible h1:rK6tzefpypqZLvs9aX7R5vcl4u1xucf2esUzFvJM6vw=
+github.com/coreos/etcd v3.2.9+incompatible h1:3TbjfK5+aSRLTU/KgBC1xlgA2dn2ddYQngRqX6HFwlQ=
 github.com/coreos/etcd v3.2.9+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
 github.com/coreos/go-oidc v0.0.0-20170307191026-be73733bb8cc h1:9yuvA19Q5WFkLwJcMDoYm8m89ilzqZ5zEHqdvU+Zbds=
 github.com/coreos/go-oidc v0.0.0-20170307191026-be73733bb8cc/go.mod h1:CgnwVTmzoESiwO9qyAFEMiHoZ1nMCKZlZ9V6mm3/LKc=
@@ -71,7 +71,7 @@ github.com/prometheus/client_model v0.0.0-20150212101744-fa8ad6fec335 h1:0E/5GnG
 github.com/prometheus/client_model v0.0.0-20150212101744-fa8ad6fec335/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/common v0.0.0-20170220103846-49fee292b27b h1:nure2StBXEgV+CtAOZSggLGJ7bfuSfvuitPnwEQSKWQ=
 github.com/prometheus/common v0.0.0-20170220103846-49fee292b27b/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=
-github.com/prometheus/procfs v0.0.0-20170216223256-a1dba9ce8bae h1:4W6eGKy6DVCKy+vFPt2wtCifCjfzvHgOomhDsv/n58Y=
+github.com/prometheus/procfs v0.0.0-20170216223256-a1dba9ce8bae h1:nbLP9B5vU3a/0hOXzolmZHxr2SQ2MEu6vhZappUZY9c=
 github.com/prometheus/procfs v0.0.0-20170216223256-a1dba9ce8bae/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/russellhaering/goxmldsig v0.0.0-20170324122954-eaac44c63fe0 h1:jhWWGMYDGjj/PmvsUkFkhlvBhOR0y8ZJW7OY/21F8FY=
 github.com/russellhaering/goxmldsig v0.0.0-20170324122954-eaac44c63fe0/go.mod h1:Oz4y6ImuOQZxynhbSXk7btjEfNBtGlj2dcaOvXl2FSM=